drivers/staging/keucr/transport.h

   1 #ifndef _TRANSPORT_H_
   2 #define _TRANSPORT_H_
   3
   4 #include <linux/blkdev.h>
   5
   6 /* Bulk only data structures */
   7
   8 /* command block wrapper */
   9 struct bulk_cb_wrap {
  10         __le32  Signature;                      /* contains 'USBC' */
  11         __u32   Tag;                            /* unique per command id */
  12         __le32  DataTransferLength;     /* size of data */
  13         __u8    Flags;                          /* direction in bit 0 */
  14         __u8    Lun;                                    /* LUN normally 0 */
  15         __u8    Length;                         /* of of the CDB */
  16         __u8    CDB[16];                                /* max command */
  17 };
  18
  19 #define US_BULK_CB_WRAP_LEN     31
  20 #define US_BULK_CB_SIGN         0x43425355      /*spells out USBC */
  21 #define US_BULK_FLAG_IN         1
  22 #define US_BULK_FLAG_OUT        0
  23
  24 /* command status wrapper */
  25 struct bulk_cs_wrap {
  26         __le32  Signature;              /* should = 'USBS' */
  27         __u32           Tag;                    /* same as original command */
  28         __le32  Residue;                /* amount not transferred */
  29         __u8            Status;         /* see below */
  30         __u8            Filler[18];
  31 };
  32
  33 #define US_BULK_CS_WRAP_LEN     13
  34 #define US_BULK_CS_SIGN         0x53425355      /* spells out 'USBS' */
  35 #define US_BULK_STAT_OK         0
  36 #define US_BULK_STAT_FAIL       1
  37 #define US_BULK_STAT_PHASE      2
  38
  39 /* bulk-only class specific requests */
  40 #define US_BULK_RESET_REQUEST   0xff
  41 #define US_BULK_GET_MAX_LUN     0xfe
  42
  43 /* usb_stor_bulk_transfer_xxx() return codes, in order of severity */
  44 #define USB_STOR_XFER_GOOD      0       /* good transfer                 */
  45 #define USB_STOR_XFER_SHORT     1       /* transferred less than expected */
  46 #define USB_STOR_XFER_STALLED   2       /* endpoint stalled              */
  47 #define USB_STOR_XFER_LONG      3       /* device tried to send too much */
  48 #define USB_STOR_XFER_ERROR     4       /* transfer died in the middle   */
  49
  50 /* Transport return codes */
  51 #define USB_STOR_TRANSPORT_GOOD 0       /* Transport good, command good */
  52 #define USB_STOR_TRANSPORT_FAILED 1     /* Transport good, command failed */
  53 #define USB_STOR_TRANSPORT_NO_SENSE 2   /* Command failed, no auto-sense */
  54 #define USB_STOR_TRANSPORT_ERROR 3      /* Transport bad (i.e. device dead) */
  55
  56 /*
  57  * We used to have USB_STOR_XFER_ABORTED and USB_STOR_TRANSPORT_ABORTED
  58  * return codes.  But now the transport and low-level transfer routines
  59  * treat an abort as just another error (-ENOENT for a cancelled URB).
  60  * It is up to the invoke_transport() function to test for aborts and
  61  * distinguish them from genuine communication errors.
  62  */
  63
  64 /* CBI accept device specific command */
  65 #define US_CBI_ADSC             0
  66 extern int usb_stor_Bulk_transport(struct scsi_cmnd *, struct us_data*);
  67 extern int usb_stor_Bulk_max_lun(struct us_data *);
  68 extern int usb_stor_Bulk_reset(struct us_data *);
  69 extern void usb_stor_print_cmd(struct scsi_cmnd *);
  70 extern void usb_stor_invoke_transport(struct scsi_cmnd *, struct us_data*);
  71 extern void usb_stor_stop_transport(struct us_data *);
  72 extern int usb_stor_control_msg(struct us_data *us, unsigned int pipe,
  73                 u8 request, u8 requesttype, u16 value, u16 index,
  74                 void *data, u16 size, int timeout);
  75 extern int usb_stor_clear_halt(struct us_data *us, unsigned int pipe);
  76 extern int usb_stor_bulk_transfer_buf(struct us_data *us, unsigned int pipe,
  77                 void *buf, unsigned int length, unsigned int *act_len);
  78 extern int usb_stor_bulk_transfer_sg(struct us_data *us, unsigned int pipe,
  79                 void *buf, unsigned int length, int use_sg, int *residual);
  80 extern int usb_stor_bulk_srb(struct us_data *us, unsigned int pipe,
  81                 struct scsi_cmnd *srb);
  82 extern int usb_stor_port_reset(struct us_data *us);
  83
  84 /* Protocol handling routines */
  85 enum xfer_buf_dir       {TO_XFER_BUF, FROM_XFER_BUF};
  86 extern unsigned int usb_stor_access_xfer_buf(struct us_data*,
  87         unsigned char *buffer, unsigned int buflen, struct scsi_cmnd *srb,
  88         struct scatterlist **, unsigned int *offset, enum xfer_buf_dir dir);
  89 extern void usb_stor_set_xfer_buf(struct us_data*, unsigned char *buffer,
  90         unsigned int buflen, struct scsi_cmnd *srb,
  91         unsigned int dir);
  92
  93 /*
  94  * ENE scsi function
  95  */
  96 extern void ENE_stor_invoke_transport(struct scsi_cmnd *, struct us_data *);
  97 extern int ENE_InitMedia(struct us_data *);
  98 extern int ENE_SMInit(struct us_data *);
  99 extern int ENE_SendScsiCmd(struct us_data*, BYTE, void*, int);
 100 extern int ENE_LoadBinCode(struct us_data*, BYTE);
 101 extern int ENE_Read_BYTE(struct us_data*, WORD index, void *buf);
 102 extern int ENE_Read_Data(struct us_data*, void *buf, unsigned int length);
 103 extern int ENE_Write_Data(struct us_data*, void *buf, unsigned int length);
 104 extern void BuildSenseBuffer(struct scsi_cmnd *, int);
 105
 106 /*
 107  * ENE scsi function
 108  */
 109 extern int SM_SCSIIrp(struct us_data *us, struct scsi_cmnd *srb);
 110
 111 #endif